Laserfiche WebLink
A <br /> Mr Terry Tarditi <br /> March 14, 2001 <br /> . Page 2 <br /> Samples are required to be analyzed for the following constituents total <br /> petroleum hydrocarbons as gasoline (TPH-G), by EPA method 8015 Modified, <br /> benzene, toluene, ethylbenzene, and xylene (BTEX), and oxygenates by EPA <br /> method 8260B <br /> Groundwater Disposal: <br /> Purge water from this sampling event was placed into drums and disposed of <br /> properly <br /> Quarterly Results Summary: <br /> Analytical laboratory Kiff Analytical, Inc , Davis, <br /> California (California <br /> Department of Health Services <br /> Certification No 2336) <br /> Sample exceptions None <br /> Shallow groundwater radient 0 001 <br /> Shallow groundwater ow direction Southwest <br /> Average depth-to-water 66 34 feet <br /> Average change in shallow groundwater <br /> elevation from previous quarter 4 0 feet decrease <br /> Field data sheets from the July 2000 quarterly groundwater sampling event are <br /> included as Attachment A Historical groundwater elevation data is <br /> summarized in Table 1 Table 2 summarizes groundwater flow direction and <br /> gradient Table 3 summarizes the historical analytical results for petroleum <br /> hydrocarbon constituents Laboratory reports for the groundwater samples <br /> collected for this sampling event are included as Attachment B A comparison <br /> of last quarter's groundwater analytical results with this quarter's sampling <br /> results is summarized below in Table 4 <br /> Table 4. Comparison of Groundwater Analytical Results with Previous <br /> Sampling Event <br /> TPH-G Benzene MTBE 8260 B <br /> 2nd qtr,00 3rd qtr,00 2nd qtr,00 3rd qtr,00 2nd qtr, 3rd qtr,00 <br /> 00 <br /> Highest 2,100 1,500 940 460 3,400 3,000 <br /> concentration,Oig/L) <br /> Well with highest 1AW-3 MW-3 MW-3 MW-3 MW-1 MW-1 <br /> concentration <br /> Number of well 2/4 3/4 3/4 3/4 3/4 4/4 <br /> with detection <br /> Use or disclosure of data continued on this sheet is subject to the restriction specified at the beginning of this document <br /> 03/13/01P\16000\16271\Aeports\3rd00gtr doc <br />